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Scott's party at the South Pole. Henry Bowers via Wikimedia Commons // Public Domain

This Explorer's Corpse Has Been Trapped in Ice for More Than a Century

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Scott's party at the South Pole. Henry Bowers via Wikimedia Commons // Public Domain

You may know the sad story of Captain Robert Falcon Scott, the British explorer who aimed to be the first to reach the South Pole—only to arrive in January 1912 to find a Norwegian flag had been planted by explorer Roald Amundsen five weeks prior. Among other setbacks, the Scott expedition was plagued by technical difficulties, infirm ponies, and illness during their 800-mile trek across the Ross Ice Shelf back to their base camp in McMurdo Sound.

Ultimately, all five men perished before they reached the camp. Petty Officer Edgar Evans suffered a head injury, a serious wound on his hand, and frostbite before dying at a temporary campsite on the return journey. Captain Lawrence Oates, suffering severely from frostbite, voluntarily left the camp one night and walked right into a blizzard, choosing to sacrifice himself rather than slow the other men down. Captain Scott, Lieutenant Henry "Birdie" Bowers, and Doctor Edward Adrian Wilson subsequently died in late March of a vicious combination of exposure and starvation.

The makeshift camp in which the last three men died was only 11 miles from a supply depot. When their frozen corpses were discovered on the ice shelf by a search party the following November, a cairn of snow was built around them, tent and all, as there was no soil in which to bury them. A cross made of skis was added to the top. Before they left, surgeon Edward Leicester Atkinson, a member of the search party, left a note in a metal cylinder at the site:

November 12, 1912, Lat. 79 degrees, 50 mins. South. This cross and cairn are erected over the bodies of Captain Scott, C.V.O., R.N., Doctor E. A. Wilson, M.B. B.C., Cantab., and Lieutenant H. R. Bowers, Royal Indian Marine—a slight token to perpetuate their successful and gallant attempt to reach the Pole. This they did on January 17, 1912, after the Norwegian Expedition had already done so. Inclement weather with lack of fuel was the cause of their death. Also to commemorate their two gallant comrades, Captain L. E. G. Oates of the Inniskilling Dragoons, who walked to his death in a blizzard to save his comrades about eighteen miles south of this position; also of Seaman Edgar Evans, who died at the foot of the Beardmore Glacier. “The Lord gave and the Lord taketh away; blessed be the name of the Lord.”

But something even more curious happened next.

In the century and change since Scott and his comrades died, the cairn-tomb has been slowly moving. That’s because it was erected on top of a 360-foot-thick section of ice—the Ross Ice Shelf, which is constantly fed by glaciers on either side. As of 2011, according to the Polar Record, it was buried under approximately 53 feet of ice, as the surface accumulates more ice and the bottom of the shelf melts and refreezes. Assuming the rate of accumulation has been approximately the same for the last five years, they’re about 55 feet inside the ice by now.

The north edge of the ice shelf also grows and shifts, as the entire plate moves slowly toward the water’s edge. As such, the cairn, the tent, and the corpses have traveled about 39 miles away from their original geographic location, and they’re still on the move. No one seems to have pinpointed exactly where they are, but glacierologists who have weighed in on the topic generally believe the bodies are still preserved intact [PDF].

Within another 250 years or so, the bodies of Scott, Bowers, and Wilson will have at last traveled to the edge of the Ross Ice Shelf, where it meets McMurdo Sound in the Ross Sea. By then, they’ll be encased in more than 325 feet of ice. The ice is not as thick at the front of the shelf as it is where the cairn began its journey, and so they could be embedded low by the time they get to the water.

It’s tempting to imagine that once the bodies meet the edge of the ice shelf in about two and a half centuries, they’ll just slide out of the melted ice and splash into the ocean. But that’s not quite how it works. As the Ross Ice Shelf advances further out to sea, every 50 to 100 years it can no longer support its own weight and the shelf calves off an iceberg. The particular chunk of the ice shelf holding the remains of Scott and his men is expected to break off into an iceberg (or possibly a mini version called a growler or bergy bit) before they get to the front of the ice shelf at the water. Back in 2011, the Polar Record forecasted that the special day will fall in 2250 or thereabouts.

If all goes as predicted, this means that Captain Scott, Lieutenant Bowers, and Doctor Wilson will then get to ride around the Ross Sea—and later the Southern Ocean—inside of an iceberg about 350 years after their deaths.

Depending on where the berg with the British bodies breaks off from the ice shelf, it will probably stay local and head toward the Antarctic Peninsula and the South Shetland Islands. The iceberg will almost certainly melt someday, be it in a decade or a century. Then, the dead men will be free-floating in the water, where, depending on a host of circumstances, they’ll stay until currents and sea animals have their way with them. Their skeletons are then predicted to wash up somewhere, possibly the South Shetlands—but who can say for sure? All we can really do is keep an eye out for them in the area in about 250 years.

Although the deaths of Robert F. Scott and his team were tragic, it’s possible to imagine that as explorers, they might have approved of the far-out adventure their bodies would endure—centuries after their final one got cut a bit short.

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iStock // Ekaterina Minaeva
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Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
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iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

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iStock
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Why Your iPhone Doesn't Always Show You the 'Decline Call' Button
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iStock

When you get an incoming call to your iPhone, the options that light up your screen aren't always the same. Sometimes you have the option to decline a call, and sometimes you only see a slider that allows you to answer, without an option to send the caller straight to voicemail. Why the difference?

A while back, Business Insider tracked down the answer to this conundrum of modern communication, and the answer turns out to be fairly simple.

If you get a call while your phone is locked, you’ll see the "slide to answer" button. In order to decline the call, you have to double-tap the power button on the top of the phone.

If your phone is unlocked, however, the screen that appears during an incoming call is different. You’ll see the two buttons, "accept" or "decline."

Either way, you get the options to set a reminder to call that person back or to immediately send them a text message. ("Dad, stop calling me at work, it’s 9 a.m.!")

[h/t Business Insider]

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